21047328

素因数分解:

$2^5\times 3^2\times {\mathrm{107}}^1\times {\mathrm{683}}^1$

素因数の和:806

約数の個数: 72

約数和(自身を含む): 60501168

約数和(自身を除く): 39453840

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 107, 144, 214, 288, 321, 428, 642, 683, 856, 963, 1284, 1366, 1712, 1926, 2049, 2568, 2732, 3424, 3852, 4098, 5136, 5464, 6147, 7704, 8196, 10272, 10928, 12294, 15408, 16392, 21856, 24588, 30816, 32784, 49176, 65568, 73081, 98352, 146162, 196704, 219243, 292324, 438486, 584648, 657729, 876972, 1169296, 1315458, 1753944, 2338592, 2630916, 3507888, 5261832, 7015776, 10523664, 21047328]

約数ペア:

[(1, 21047328), (2, 10523664), (3, 7015776), (4, 5261832), (6, 3507888), (8, 2630916), (9, 2338592), (12, 1753944), (16, 1315458), (18, 1169296), (24, 876972), (32, 657729), (36, 584648), (48, 438486), (72, 292324), (96, 219243), (107, 196704), (144, 146162), (214, 98352), (288, 73081), (321, 65568), (428, 49176), (642, 32784), (683, 30816), (856, 24588), (963, 21856), (1284, 16392), (1366, 15408), (1712, 12294), (1926, 10928), (2049, 10272), (2568, 8196), (2732, 7704), (3424, 6147), (3852, 5464), (4098, 5136)]